Mike Travis wrote:
Interesting, I was just preparing a patch to fix this (follows)
Oops, sorry, I was mistaken. The patch I'm preparing is for a different
problem. I'll look more closely at the bug report but I may need Chris's
help in resolving it.
Thanks,
Mike
Andrew Morton wrote:
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Wed, 13 Jul 2011 14:32:42 GMT
bugzilla-dae...@bugzilla.kernel.org wrote:
https://bugzilla.kernel.org/show_bug.cgi?id=39312
URL: https://bugs.gentoo.org/show_bug.cgi?id=373109
Summary: intel-iommu: Dont cache iova above 32bit - network
copy freezes system
Product: Drivers
Version: 2.5
Kernel Version: 2.6.39.2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: drivers_ot...@kernel-bugs.osdl.org
ReportedBy: marcus.d...@gmail.com
Regression: No
Created an attachment (id=65422)
--> (https://bugzilla.kernel.org/attachment.cgi?id=65422)
dmesg
Hi,
With the upgrade to 2.6.39.2, I cannot copy more than ~1GB of data
over the network before my input devices lock up.
Example:
use scp on tty1 to copy a folder or file larger than 3GB over my
gigabit network and after ~1min the keyboard stops responding.
use cp on tty1 with an nfs-3 share mounted over the same network and
try to copy the same file, same happens
I can hit ctrl+c for about 20-30 sec and eventually get an interrupt
that stops the copying, then the input devices slowly gain control
again. If I do the same on X, there is no chance to get in between and
I have to use SysRq to reboot.
In our bug report at https://bugs.gentoo.org/show_bug.cgi?id=373109
We did a bisect between 2.6.39.1 and 2.6.39.2 and found the following
patch is causing this problem:
commit 87cc4d1e3e05af38c7c51323a3d86fe2572ab033
Author: Chris Wright <chr...@sous-sol.org>
Date: Sat May 28 13:15:04 2011 -0500
intel-iommu: Dont cache iova above 32bit
I will also attach dmesg, current kernel config, and my bisect log (I
put a uname -a into the log after each bisect) plus git bisect log
A 2.3.39.1->2.6.39.2 regression.
And, presumably, a 2.6.39->mainline regression.
That's commit 1c9fc3d11b84fbd0c4f4aa7855702c2a1f098ebb in mainline.
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